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Proceedings Paper

Simulation of x-ray projections for 3D cone-beam tomography
Author(s): Zhongyuan Qin; Xuan-qin Mu; Ping Wang; Yuanlong Cai
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Paper Abstract

In this paper, we present a general approach to obtain the x-ray projections in cone-beam tomography in order to get rid of random factors in the measurement so as to support proceeding three dimensional (3D) reconstruction. First, the phantom is discretized into cubic volume through inverse transformation, then a generalized projection procedure is proposed to the digitized result without concerning what the phantom exactly be. In the second step line integrals are calculated to obtain the projection of each x-ray through accumulation of tri-linear interpolation. Considering projection angles, a rotation matrix is proposed to the x- ray source and the detector plane so we can get projections in arbitrary angles. In this approach the algorithm is easy to be extended and irregular objects can also be processed. The algorithm is implemented in Visual C++ and experiments with different models show satisfactory experimental results.

Paper Details

Date Published: 12 April 2002
PDF: 6 pages
Proc. SPIE 4536, International Workshop on Photonics and Imaging in Biology and Medicine, (12 April 2002); doi: 10.1117/12.462535
Show Author Affiliations
Zhongyuan Qin, Xi'an Jiaotong Univ. (China)
Xuan-qin Mu, Xi'an Jiaotong Univ. (China)
Ping Wang, Xi'an Jiaotong Univ. (China)
Yuanlong Cai, Xi'an Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 4536:
International Workshop on Photonics and Imaging in Biology and Medicine

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